Medicinal spray



J. B. SCHMITT MEDICINAL SPRAY Filed Aug. 28. 1950 Fig.1 Fig.2

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Patented Nov. 15, 1932 UNITED STATES PATENT OFF-ICE JOY B. SCHMITT, OF TOLEDO, OHIO, ASSIGNOR TO THE DE VILBISS COMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO MEDICINAL SPRAY Application filed August 28, 1930. Serial 1T0. 478,861.

This invention relates to atomizing devices and particularly to those used for medicinal purposes for spraying li uids of a nature which are relativel thic when cold and which require heating to render them of spraying consistency. v

The object ofthe invention is the provision of an improved device of this character which is simple in construction and ca able of eflectinga more thorough and e cient atomizing of the material being sprayed or nebulized than has, to my knowledge, been accomplished by devices heretofore used for the pu ose.

The invention is fu y described in the following specification, and while it is'capable of embodiment in numerous forms, a preferred embodiment thereof is illustrated in the accompanying drawing, in which,-

Figures 1 and 2 are di erent central vertical sections of a device'embodying the invention, with parts in full; Fig. 3 is a cross section on the line 33 in Fig. 1; and Figs. 4, 5 and 6 are cross sections, respectively, on the lines 4-4, 55 and 66 in Fig. 1.

Referring to the drawing, 1 designates a casing forming a heating chamber 2 and which, in the present instance, is closed at its lower end by a supporting base 3 and at its upper end by a top member 4.

The top member 4 has a receptacle 5 depending centrally therefrom into the upper portion of the chamber 2 in spaced relat on to its sides so that heat within said chamber will have direct contact with the bottom and side walls of the receptacle. The rece tacle 5, in the present instance, is formed y an inward drawing of the central portion of the top member 4, and its upper end is closed b a removable member 6 from which a spray the bottom of the receptacle 5,

A head 12 is mounted on the nozzle 10, be-

ingthreaded thereon and cooperating with the outer reduced end portion of the nozzle to provide an annular chamber 13 therearound. A liquid suppl tube 14 is tapped into the side of the hea 12 in communica tion at its upper end with the chamber 13 and having its lower end extended down to near the bottom of the receptacle 5.

' The head 12 has a horizontally disposed cross opening 15 therein which communicates at its bottom substantially'centrally of its end with the chamber 13 through an opening 16 through which the discharge of air from the free end of the nozzle 10 is directed. It is evident with this arrangement of parts that part 10 and enclosing part of the head 12 form. inner and outer nozzles and 7 that the discharge of air from the nozzle 10 through the opening 16 and into the cross opening 15 will create a suction through the chamber 13, thus drawing liquid from the receptacle through the tube 14 into the chamber 13 and thence through the opening 16 into the cross opening 15. The discharging 76 of the air and liquid into the cross opening 15 efl'ects a thorough and efiicient breaking up and vaporizin of the liquid particles drawn therein throug the opening 16 and the s ray or vapor thus formed is discharged rom 80 both ends of the opening 15 into theupper portion of the receptacle 5, and thence passes out through the discharge tube 7. It is found in practice that the provision of the cross opening 15 in the head 12 not only provides 35 an eflicient mixing chamber for the air and liquid discharging therein, but also prevents the atomized stream from being discharged directly into and through the tube 7, but causes it first to enter there ceptacle 5 and then by circuitous route to pass through the discharge tube. This creates a greater volume of discharge of vapor from the tube 7 thanwould otherwise be the case, inasmuch 5 as the receptacle 5 is first substantially filled above the liquid therein by the vapor before it discharges from the outlet-tube, and. also acts as a bafile to prevent unatomized globules of liquid from discharging into the tube 7,

but causes them to drop back into the liquid in the receptacle.

The tube 9 has a branch 9 leading from its lower end outwardly through a side of the casing 1 for attaching to any suitable source of air pressure supply. In the present instance, the lower end of the tube 9 is closed and anchored to the member forming the bottom of the chamber 2 and at its point of passing through the bottom of the receptacle 5 is firmly secured thereto by a shoulder on one side and a nut 17 on the other. It is thus apparent that the tube 9, in addition to serving as a tube for supplying air to the nozzle 10, also serves as a rigid spacing means for the bottoms of the casing 1 and receptacle 5 and serves to retain thetop member 4 in assembled relation to the casing.

To adapt this device for the spraying of liquids, which when cold, are of a thick petroleum jelly nature, or which constitute petroleum jelly or a' similar substance as its base, an electric heating coil 18 is disposed within the heating chamber 2 preferably in encircling relation to the tube 9 so as to heat such tube and the air passing therethrough and also to heat the interior of the chamber 2, which eifects, by conduction through the wall of the receptacle 5, a heating of the material therein. The heat from the tube 9' is also conducted to the metal 01"" the receptacle 5 to more effectively heat the same. The circuit wires for the heating element are extended to any suitable source of electric current supply without the device. A switch is disposed in the heating circuit and, in the present instance, comprises the normally spaced members 19 and 20, which are carried within the heating chamber 2 by a standard 21 of insulating material and are caused to be moved into circuit closing relation by inward pressure on a push button 22 that is mounted in one side of the casing 1. The standard 21 is attached at its lower end to the bottom member of the casingI 1, and has its upper end attached to a brac et 23, which is secured to and projects from the upper end of the tube 9. p

It is apparent in the use of my device that the material to be sprayed, which may be of a jelly or petroleum-like consistency when cold, is introduced into the receptacle 5 through the upper end thereof when the to 6 is removed. The electric circuit in whic the heating element 18 is disposed, having been closed by inward. movement of the switch button 22, causes a heating of the chamber 2 to effect a'heating of the receptacle 5 and liquidizationof the matter therein."

Upon the forcing of air through the tube 9, it is heated by the coil and is distributed vunder pressure through the restricted orifice of the nozzle 10 into the mixing opening or chamber 15, efiecting a drawing of the liquid from the container through the tube 14, an-

nular chamber 13 and o enin 16, as is well understood in the art. he ischarge from the nozzle 10 and opening 16 is against the opposite side of the chamber 15, thus causing a more eflicient breaking up and finely s raying of the liquid particles within the- 0 amber 15 than would otherwise be the case, and the spray or vapor which is thus created passes from both ends of the chamber 15 into the receptacle 5 and thence discharges therefrom through the outlet tube 7.

I wish it understood that my invention 13 not limited to any specific construction, form :or arrangement of the parts, as it is capableof numerous modifications and changes without departing from the spirit of the claims.

Having thus described my invention, what I claim as new and desire-to secure by United States Letters Patent is:

1. A device of the class described, comprising a casing formin a heating chamber, the top of said casing aving a receptacle depending therefrom into the heating chamber,

said receptacle being provided at its top with a discharge outlet, an air pressure supply tube entering the bottom portion of the receptacle through said chamber and having a discharge nozzlewithin the receptacle, a head cooperating with said discharge nozzle to form a chamber therearound in communicharge, whereby material contained in the receptacle is sprayed into said cross opening by the air discharge action and is finel broken up therein by contact with the we of said cross openin and then discharged in spray form into t e receptacle from the opposite ends of the cross opening.

2.' In a device of the class described, a casno in g forming a heating chamber, means closing the upper end of the casing and forming a receptacle which extends down into the easing,'said receptacle having a removable cover with a discharge tube carried thereby, an air 7 pressure actuated liquid spraying device disposed within said receptacle and havinga spra bafliing part associated therewith for brea 'ng up and directing the spray into the receptacle laterally from the spraying device, an air supply tube for said spraying ber through the bottom of the receptacle and thence from the chamber, said tube forming a' tying means for the receptacle and casing, an electric heating unit disposed around said tube within the heating chamber, and a switch in circuit with said coil controlled exteriorly of the casing.

3. In a spraying device, a liquid receptacle having a spray discharge tube therefrom,

device extending down into the heating chaman air pressure supply tube extending into the receptacle and having a discharge nozzle within the receptacle, a head separate from the discharge tube cooperating with said discharge nozzle to form a chamber therearound in communication with the lower interior portion ofthe receptacle and also forming a discharge opening from said chamber aligned with the nozzle discharge and having a cross opening into which said discharge opening has its discharge, whereby material contained in the receptacle is sprayed into said cross opening by the air dischar e action and is finally broken up therein y contact with the wall of said cross openingand then discharged in spray form into the receptacle from the opposite ends of the cross opening and at an angle to the discharge outlet from the receptacle.

4. In a spraying device, a liquid receptacle having a discharge outlet in its upper portion, an air pressure supply tube projected into the lower portion of the receptacle and suspended within the upper portion of the caslng and closing its top, said receptacle having a discharge passage at its top portion, an air pressure actuated liquid s raying device disposed within the receptac e, an air pressure'supply tube for said spraying device extending down into the heating chamber through the bottom of the receptacle and thence from the chamber, said tube forming a tying means for the receptacle and casing, and an electric heating unit as? sociated with said tube within the heating chamber. I

In testimony whereof I have hereunto signed my name. to this specification.

JOY B. SCHMITT.

having a discharge nozzle therein, a head mounted on said discharge nozzle within the receptacle separate fromits outlet and having a mixing chamber into which the nozzle discharges and in communication with the lower interior portion of the receptacle to admit fluid from one to the other, said head having a cross discharge opening therein open at both ends and with restricted communication at one side with said chamber in the line of discharge of said nozzle, said cross opening being angularly disposed with respect to said discharge outlet.

5. In a spraying device of the class described, a casing forming a chamber therein, a liquid receptacle within the upper portion of the chamber having a discharge outlet from its upper portion, an air pressure supply tube projecting through said chamber and into the lower portion of said receptacle and having a spraying discharge means on said tube in communication with the lower interior portion of the receptacle to discharge liquid therefrom, and electrical means associated with the air tube within said chambelr; for heating the air passing through the tu e.

6. In a spraying device ofthe class described, a casing forming a heating chamber, a receptacle for the liquid to be sprayed mounted in the upper portion of the casing and having a discharge tube extending to the outside of the chamber, an air pressure actuated liquid spraying device disposed within the receptacle, an air pressure supply tube for said spraying device extending from the bottom receptacle into the heating chamber, and'an electrical heating unit associated with said tube within the heating chamber.

7 In a device of the 'class described, a casing forming a heating chamber, a receptacle for containing the liquid to be sprayed 

